Trail Running Calendar East of England 2026-2027

An evening marathon that follows canals, waterfalls, vineyards, woodland and coastal saltmarshes, running from early evening into the night. Registration for the 2026 edition is closed.

A backyard ultra at High Lodge Thetford Forest where runners complete a 4.167 miles loop each hour until one person remains. 6 and 12 hour timed options are available; the open event uses chip timing and offers a £500 prize.

A circular long-distance run or walk of around 46 miles through Cambridgeshire, visiting former RAF Pathfinder Force airbases. Participants may enter solo or as a team relay; the entry includes a course booklet, event t-shirt and finisher m..

A 5k obstacle course at Cassiobury Park where participants climb, crawl and slide across a largely flat, mixed-terrain route. The event supports fundraising for cancer research and includes a medal, refreshment facilities and on-course assi..

A narrative, self-navigation trail race of about 7 miles on 6 June 2026, run under UK Athletics rules with a permit from the Trail Running Association. Race HQ is in the fete field and each entry includes a £3 tea tent voucher.

A multi-distance event around the village of Ousden in Suffolk, based at the Suffolk Running Centre. Options range from 5k to ultra with aid stations every 10k, on-site parking and a bespoke finisher medal.

Trail running at Wendover Woods on 7 June 2026 offering a half marathon, a 10k and a junior run on hilly forest trails with route maps, an on site cafe and spectator attractions.

An off-road measured 5K at Westley Heights Country Park, Race 3 of the seven-event Crown to Crown series, run mainly on bridleways with basic race services and TRA licensing.

A scenic 10K around Sandringham Estate on 12 June 2026 with chip timing, a bespoke medal and on course photography. The mixed trail and road route is marshalled and held under UK Athletics and Trail Running Association rules.

A 24 hour trail race around Sandringham Estate with solo and team entries, camping and an event village. The weekend includes a five mile lap format, a children’s one mile fun run, timing, medical support and on-site facilities.

A guided 16k trail run at High Lodge in Thetford Forest with conversational group pacing, forest facts and practical trail-running tips, varied woodland terrain and opportunities to spot wildlife.

A trail event at Colemans Fishery in Rivenhall on 14 Jun 2026 offering two route choices of about 6.5 or 4.2 miles. Entry fees are non-refundable and proceeds go to Essex and Herts Air Ambulance Trust.

Round 3 is a 5k trail race at Langdon Discovery Nature Park on 16 June 2026, run as two laps of a 2.5k circuit. The event is for ages 12 and over, supports local charities and provides on-the-day entries at the same price as online.

A low-key Category A fell race inside the M25 held on 19 June 2026, with multiple climbs around Yardley Valley and a finish on Pole Hill overlooking the Lea Valley. Entry is via SPOND and carries a £5 fee.

A lapped ultramarathon on a 10.15 mile mostly off-road loop around Maldon, with 101.5, 50.75 and 30.45 mile options, chip timing, checkpoints and compulsory kit requirements.

Celebrate the longest day at the Summer Solstice Challenge around Abberton Reservoir, a timed loop with 5 km laps. Run as many laps as you like, earn a medal and support Essex Wildlife Trust.

A 21.2 km trail half marathon at Dunstable Downs on 21 June 2026 featuring 450 m of ascent, marked trails, two aid stations, route downloads, and a 250 runner limit.

Circular cross country event from Baldock offering 26 and 18 mile routes across grassland, fields and woodland with checkpoint refreshments and a finish certificate. Minimum age 14 and entries close 13 June or when the 175 limit is reached.

A single lap fully off road 10K trail through Panshanger Park on 21 June 2026, passing a 500 year old oak, the Queen’s Wood and the Mimram River. The event includes chip timing, a sustainable finisher’s medal and a Family Fun Run.

A muddy 5k at Trinity Park, Ipswich on 21 June 2026 organised by Cancer Research UK. The fairly flat showground course uses grass and paths and includes obstacles to climb, crawl and slide. Minimum fundraising target £50.